Building a more efficient route in the Finnish archipelago

What enables a ferry to operate more efficiently and sustainably on its route between two islands in the vulnerable Finnish archipelago? It’s about being the best at what you do. Steerprop together with Suomenlahden Telakka have now completed a highly efficient retrofitting project for Finferries’ Prostvik passenger and car ferry.

This project represents a big step forward in energy efficiency.  The old diesel-mechanic system was replaced with electric distribution using Steerprop’s 10 CRP LM propulsion units with an integrated 400 kW permanent magnet motor. The delivery also included a modernized control system and intuitive control panels. Steerprop provided these highly customized units on a short delivery schedule.

“The ferry was originally built in the 80s.  The good and close cooperation with Finferries and Suomenlahden Telakka made this retrofit project possible. It was essential that we could do all checks onboard during the design phase when the ferry was still in operation as well as at the yard during the conversion,” says Olli Knihti, Sales Manager at Steerprop.

Meeting more stringent regulations

Suomenlahden Telakka, the largest small-tonnage vessel repair and maintenance shipyard in Finland, strong advocated the technology to Finferries. “We know Steerprop’s LM configuration saves space in the vessel and brings a greater level of simplicity to the engine room,” says Jukka Jaatinen, Managing Director of Suomenlahden Telakka. “Additionally, it was a more straightforward installation process for us, since the propulsion system is extremely compact with lower weight.”

Now in operation, the electric propulsion system brings greater economic advantages to Finferries. “The diesel engines can run according to the power requirement, and fuel consumption is optimized. The ferry also has a DC link, which allows future upgrades such as adding a battery to the vessel,” states Olli Knihti, Sales Manager at Steerprop.

Steerprop’s solution is ideal for the numerous ferries operating around the world, as regulations become even stricter, not only on a global level but even more so at the local and regional level, such as in the Finnish archipelago.  

“Steerprop is committed to the principle of where meeting customers’ needs is at the core. And only the best will do. This ferry retrofit is good proof that our solutions and way of thinking create great results for our customer and also for the environment,” Knihti continues.

Innovative contra-rotating propeller (CRP)

The Steerprop 10 CRP LM propulsor system offers excellent efficiency. The dual-end CRP combines the exceptional maneuverability of azimuth propulsors with low pressure pulses and noise levels. The integrated vertical permanent magnet motor provides reliable high-power propulsion, increased fuel savings and lower emissions. Steerprop has delivered over 140 CRP units to vessels throughout the world.

For more information, please contact:

Olli Knihti, Sales Manager, Steerprop Ltd., Tel. +358 40 019 1943

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